Resolved, N. C. D. 8. That they have a right peaceably to
assemble, consider of their grievances, and petition the
king; and that all prosecutions, prohibitory proclamations,
and commitments for the same, are illegal.

The Founders' Constitution
Volume 5, Amendment I (Petition and Assembly), Document 13http://press-pubs.uchicago.edu/founders/documents/amendI_assemblys13.htmlThe University of Chicago Press

Documents Illustrative of the Formation of the Union of the American States. Edited by Charles C. Tansill. 69th Cong., 1st sess. House Doc. No. 398. Washington, D.C.: Government Printing Office, 1927.